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Open AccessReview

Silicon Nanotubes as Potential Therapeutic Platforms

Department of Chemistry and Biochemistry, Texas Christian University, Fort Worth, TX 76129, USA
Author to whom correspondence should be addressed.
Pharmaceutics 2019, 11(11), 571;
Received: 27 September 2019 / Revised: 24 October 2019 / Accepted: 28 October 2019 / Published: 1 November 2019
(This article belongs to the Special Issue Porous Silicon for Drug Delivery)
Silicon nanotubes (SiNTs) with unique well-defined structural morphologies have been successfully fabricated and recognized as a novel architecture in the nanoscale Si family. While the typical dendritic microstructure of mesoporous silicon prepared anodically has been exploited previously for therapeutics and biosensing, our status of utilizing SiNTs in this regard is still in its infancy. In this review, we focus on the fundamental properties of such nanotubes relevant to therapeutic applications, beginning with a description of our ability to sensitively tune the structure of a given SiNT through synthetic control and the associated detailed in vitro dissolution behavior (reflecting biodegradability). Emphasis is also placed here on the range of functional moieties available to attach to the surface of SiNTs through a summary of current studies involving surface functionalization and strategies that facilitate conjugation with molecules of interest for multiple purposes, including cell labeling, nucleotide attachment, and scaffolding of therapeutic metallic nanoparticles. Experiments addressing our ability to load the interior of a given nanotube with species capable of providing magnetic field-assisted drug delivery are also briefly described. Given the range of diverse properties demonstrated to date, we believe the future to be quite promising for employing SiNTs as therapeutic platforms. View Full-Text
Keywords: silicon nanotubes; surface chemistry; drug delivery silicon nanotubes; surface chemistry; drug delivery
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MDPI and ACS Style

Le, N.T.; Tian, Y.; Gonzalez-Rodriguez, R.; Coffer, J.L. Silicon Nanotubes as Potential Therapeutic Platforms. Pharmaceutics 2019, 11, 571.

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